# Mars Book vs ReactorN

The clearest difference is iOS requirement: Mars Book at 9.0 against ReactorN's 17.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Mars Book | ReactorN |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | — |
| Size | 14 MB | 5 MB |
| Requires iOS | **9.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Vixen Co.,Ltd.](https://appshunter.io/developer/536188843) | [TYH DANIEL MC LEAN](https://appshunter.io/developer/1883832348) |

## What reviewers say

### Mars Book

[App page](https://appshunter.io/ios/app/mars-book/id1342509724)

**In-app purchases:** none


### ReactorN

[App page](https://appshunter.io/ios/app/reactorn/id6760489710)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Mars Book free?

Mars Book is free to download, with no in-app purchases.

### Is ReactorN free?

ReactorN is free to download, with no in-app purchases.

### Do Mars Book or ReactorN have ads?

Neither Mars Book nor ReactorN shows ads.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*